Lan transformer in the communication equipment application after the motherboard is bad, network communication will be a variety of bad products, such as signal noise increased, network transmission rate reduced, gigabit into 100 megabit, network port does not work and so on phenomenon.

For ethernet transformer professional manufacturers, the problem is different to show the parameters will be different, such as short-circuit test PS but, inductance value is too large or ultra-small, insertion loss, return loss parameters do not meet the standard, network communications signal transmission embodies a variety of bad, poor voltage into the mouth surge can not be, etc.

For network communication equipment, normal use after the emergence of sudden problems such as network signal does not work, the rate of reduction can be considered for the lan transformer product damage, but also can only be listed as one of the problems identified, a number of components of the communication board, the problem is sometimes more than just a component problem, so do for the use of personal to solve the problem does not have much reference significance.

For the ethernet transformer product itself, a single product good or bad is not much reference significance, we need to consider the manufacturer of the lan transformer product batch of the overall quality control standards, YYI-TEK, we are the basic standard of quality control of ethernet transformer products is the electrical defect rate to be controlled at 0%, do not allow a bad product out of the product line, into the terminal. Appearance and all the rest of the total rate of bad to control the highest 800PPM below, strictly we are to control the 300PPM to that is three parts per million of the total rate of bad.